Automatic heat-controlling device.



A. P. BROOMELL. AUTOMATIC HEAT CONTROLLING DEVICE.

APPLICATION FILED JULY 8, 1914.

Patented Mar. 23, 1915.

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WITNESSES Swan/ A; P. BROOMELL. I AUTOMATIC HEAT CONTROLLING DEVICE.

APPLICATION FILED JULY 8, 1914.

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2233211 fiJEOO/WELZQ WITNESSES A nomwsys ALBERT P. BROOMELL, OF YORK, PENNSYLVANIA.

AUTOMATIC HEAT-CONTROLLING DEVICE.

Specification of Letters Patent.

Patented Mar. 23,1915.

Application filed J'uly 8, 1914. Serial No. 849,679.

My invention relates to improvements in.

devices for automatically controlling the heat given out by radiators and the like, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a device in which a thermostatic member is directly connected with a radiator valve so as to control the valve in accordance with the temperature of the room.

A further object of my invention is to provide a device of the type described in which a thermostatic member is placed close to the floor, but is protected from the heat of the radiator and from the steam pipe so that the air which reaches the thermostatic member will, be substantially at the same temperature as the air at the floor of the room in which the radiator is placed.

A further object of my invention is to provide a device of the type described with means for regulating the device so as to cause the valve to operate at any predetermined temperature.

Other objects and advantages will appear in the following specification and the novel features of the device will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming part of this application in which- Figure 1 is a side view of the device, certain parts being shown in section, Fig. 2 is an end view, Fig. 3 is a sectional view on a line 33 of Fig. 1, a portion of the radiator being shown in plan view, Fig. 4:iS an enlarged section through the valve on the line H of Fig. 1, Fig. 5 is a section along the line 55 of Fig. 4, Fig. 6 is a detail view of a yoke, Fig. 7 is a bottom plan view of the valve proper, and Figs. 8, 9 and 10 are similar views of modified forms of valves.

In carrying out my invention I may make use of a radiator 1 of any type such as a steam radiator or a hot water radiator.

At 2 is shown a valve casing-which cominunicates with the radiator 1 by means of a pipe or nipple 3 and which is connected with the source of steam or water supply by means of a supply pipe 4. For some, distance up from the floor I inclose a pipe 4 with a heat insulating covering 5 made of fiber or other heat insulating material. Around the fibercovering 5 is secured a clamping member 6 having a set screw 7 for adjusting the same in various positions. This clamping member bears a metallic tube 8 which is preferably nickel plated and which is lined on the inside with a heat insulating sheet 9 of fiber or other suitable heat insulating material. vided at its top with a spider 10 whose central portion 11 forms a guide member-for a stem 12, as will be hereinafter explained. Inside of the fiber insulating member 9 is a corrugated tube 12 and within the corrugated tube is a thermostatic bellows 13 whoselower end rests upon a suitable support 14,but whose upper end is free to move when the bellows is expanded or contracted.

The stem 12 is secured in the lower end of a yoke 15 (a detail .view of which is shown in Fig. 6) by means of a set screw 16. This yoke bears a regulating screw 17 which passes through a wrist pin 18 carried by an arm 19 secured at the end of a rock shaft 20 which passes-through the walls of the valve casing 2, and which is provided with a collar 21 and a squared portion 22 arranged to pass through an arm 23. Thelatter has a rounded end 24 which extends between an upper and'a lower collar 25 and 26 respectively on the valve stem 27. The collar 26 serves as a valve and is provided with guide wings 28 which extend through the opening in the partition 29. The rock shaft 20 (see Fig. 4) is provided with a sleeve 30 of soft metal'such as Babbitt. A spiral spring 31 holds the collar 21 close to the end of the Babbitt sleeve and thus forms asteam-tight joint thereby doing away with the necessity of packing. This spring is inclosed in a recess 19 in the rock arm 19, this forming a housing for the spring. The

yoke 15 is provided on one side with a series The tube is pro- .the top of the bellows.

of marks 32 indicating temperatures, while the arm 19 bears an arrow which points toward the temperature scale.

From the Y foregoing description of the various parts of the device the operation thereof may be readily understood.

The yoke 15 together with its adjusting screw and the rod 12 is of suiiicient weight to keep the. valve always open. When the thermostatic bellows is coldand collapsed to its shortest length the rod 12 is down against H the temperature increases the bellows will expand and force the rod 12 upwardly, thereby rotating the rock'shaft and causing the closure or the partial closure of the valve 26. If it is desired to close the valve at a higher temperature the regulating screw is turned to the right, which will pull the connecting rod up away from the bellows so that the latter will have to move farther by increased temperature before it will transmit movement to the valve.

It will thus be seen that ll have provided a heat regulating device in which the thermostatic member is attached directly to the radiator valve with a simple adjusting means so as to vary the temperature at which the valve will be opened. The arrangement of the heat insulating means for the bellows keeps the latter at substantially the temperature of the air near the floor. At the same time the steam supply pipe serves as a means for supporting the thermostatic member.

In order to adapt the valves to diflerent size radiators so that they will not be flooded with steam ll may add metal to the guide Wings 28, thereby providing passages 33 of greater or less area as shown in the modified forms in Figs 8 to 10 inclusive. The thermostatic member 13 is preferably made up of a series of individual sections which are set one on top of the other. These sections are partially filled with volatile liquid which will tend to cause the expansion of the sections, thereby lengthening the thermostatic member 13 as a whole and causing the movement of the rod 12. I have found that by subdividing the bellows into sections the movement of the thermostat is much quicker and more accurate than if one long thermostatic bellows is used. My invention contemplates the use, however, of any suitable thermostat.

I claim 1. The combination with a radiator having a supply pipe, of a valve casing communicating with said radiator and said supply pipe, a valve therein for controlling the heating fluid, a thermostat casing carried by said supply pipe, said thermostat casing being open at the bottom and at the top, means carried by the supply pipe and by the thermostat casing -for insulating the heat ing a. supply pipe,

from the radiator and from the supply pipe,

a thermostat disposed'within said thermostat casing, means disposed. between said thermostat and said valve for operating the latter, said last named meanscomprising a depending rod connected with the valve, and means for shifting the position of the rod with respect to the thermostat so as to vary the point of contact of the thermostat with the rod.

2. The combination with a radiator having a supply pipe, of a valve casing communicating with said radiator and with said supply pipe, a valve within said casing for controlling the supply of heating fluid, a thermostatic member carried by said supply pipe, means for insulating said thermostatc member from the heat from said radiator and said supply pipe, means connected with said thermostatic member fr positively operating said valve at a predetermined temperature, and means for regulating the temperature at which the valve is operated.

3. The combination with a radiator havof a valve casing com= municating with said radiator and with said supply pipe, a valve within said casing for controlling the supply of heating fluid, a thermostatic member carried by said supply pipe, means for insulating said thermostatic member from the heat from said radiator and said supply pipe, a rocker arm connected with said valve for operating the latter, a yoke pivotally connected to said rocker arm, and a rod secured to said yoke and arranged to be engaged by said thermostatic member for moving said yoke and said rocker arm.

l. The combination with a radiator having a supply pipe. of a valve casing cornmunicating with said radiator and with said supply pipe, a valve within said casing for controlling the supply of heating fluid, a thermostatic member carried by said sup-- ply pipe, means for insulating said thermostatic member from the heat from said radiator and said supply pipe, a rocker arm connected to said valve for operating the latter, a wrist pin carried thereby and having a threaded opening. a. regulating screw disposed in the threaded opening of the wrist pin, a yoke connected with said regulating screw and movable with respect to the rocker arm when the screw is turned, and a rod rigidly connected with said yoke and arranged to extend into operative relation w th said thermostatic member.

5. The combination with a radiator having an individual supply pipe, of a valve cas ng carried by said supply pipe, an individual inlet establishing: communication between said radiator and said valve casins; said individual'supply pipe and said valve casing being in close proximity to lllltl said radiator, a valve within said valve casating said valve at a predetermined teming for controlling the heating fluid, a. perature, and means for regulating the temthermostat member carried by said supply perature at which the valve is operated.

pipe, means for insulating said thermostat ALBERT P. BROOMELL. member from the heat from said radiator Witnesses: and said supply pipe, means connected with GRACE M. DRAYER,

said thermostat member for positively oper- WM. H. KOLLER. 

